m3reno
Well-Known Member
- Thread starter
- #31
What evidence is there of what the dealer said? I'm not disputing them, I'd just like to think at some point we live in an evidence based society. On my V6 it clattered like hell on a cold start and my believe was that number of cold starts was the problem more than anything else. I only have a hypothesis and no evidence of that being the cause.
Roller followers need only a tiny amount of oil compared to journal bearings. Splash lubrication works. Lifters will tell you if they don't have enough oil pressure, like I heard on a cold start.
As for oil change interval, look at the oil analysis viscosity and TBN. If they are within spec and there is no metal in the oil, then the oil is still good. Mine was good to 7500+ miles so I generally change at 6000 miles, often because I do long trips and don't want an oil change in the middle of one.
I'm not saying I believe him, I'm just stating what he said when the subject of failed rockers came up. All he said is he has seen his fair share of failed cams and rockers and was concluding that idling and lower viscosity oil was the culprit due to low pressure at idle. But Alphwolf already debunked the low pressure at idle.
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